c33a0e5a3f9dbda26be1308945f8d41dea6bbbb6c612d32ebbd1ea5402370dc4

General

Target

c33a0e5a3f9dbda26be1308945f8d41dea6bbbb6c612d32ebbd1ea5402370dc4.xls
Size

96KB
MD5

709b8e27028e51d6b4dc9df496bbca15
SHA1

c124723c34dac8c048cb44e19938143b514a5835
SHA256

c33a0e5a3f9dbda26be1308945f8d41dea6bbbb6c612d32ebbd1ea5402370dc4
SHA512

04722019c0f1a40ad6e9ee7ba5912bb5c86bb44877c338a4bf99f35b2a45136b084c9ffdabcb0266997c0c200b7145a9b66d08fe23c45116e953057f29e3804c
SSDEEP

1536:7kKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg2HuS4hcTO97v7UYdEJmE:IKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgA

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://atperson.com/campusvirtual/EOgFGo17w/

xlm40.dropper

https://eliteturismo.com/phpmailer-old/dafdBxQONtk5Uf9dxll/

xlm40.dropper

http://atici.net/c/JDFDBMIz/

xlm40.dropper

http://domesticuif.co.za/libraries/nbnH9dpd/

Signatures

Process spawned unexpected child process 4 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	228	3508	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1448	3508	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1172	3508	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3920	3508	regsvr32.exe	81

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3508	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3508	EXCEL.EXE
3508	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3508	EXCEL.EXE
3508	EXCEL.EXE
3508	EXCEL.EXE
3508	EXCEL.EXE
3508	EXCEL.EXE
3508	EXCEL.EXE
3508	EXCEL.EXE
3508	EXCEL.EXE
3508	EXCEL.EXE
3508	EXCEL.EXE
3508	EXCEL.EXE
3508	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3508 wrote to memory of 228	3508	EXCEL.EXE	86
PID 3508 wrote to memory of 228	3508	EXCEL.EXE	86
PID 3508 wrote to memory of 1448	3508	EXCEL.EXE	89
PID 3508 wrote to memory of 1448	3508	EXCEL.EXE	89
PID 3508 wrote to memory of 1172	3508	EXCEL.EXE	91
PID 3508 wrote to memory of 1172	3508	EXCEL.EXE	91
PID 3508 wrote to memory of 3920	3508	EXCEL.EXE	92
PID 3508 wrote to memory of 3920	3508	EXCEL.EXE	92

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\c33a0e5a3f9dbda26be1308945f8d41dea6bbbb6c612d32ebbd1ea5402370dc4.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3508
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
  2⤵
  - Process spawned unexpected child process
  PID:228
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
  2⤵
  - Process spawned unexpected child process
  PID:1448
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
  2⤵
  - Process spawned unexpected child process
  PID:1172
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
  2⤵
  - Process spawned unexpected child process
  PID:3920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

Filesize
1KB

MD5
3b74cf03fc5d0f0e028c0400ba28ac7e

SHA1
341ae9710c345803c48944b44217949b04f7d525

SHA256
0abb4daa89a3a97d47f9da896c66425424fd16ab7756873cd2ceee9f4c25edca

SHA512
b4b8f2c1bc2e5f14ab41ca4827dbf3a3083ec36c446aaac20057e6fef7c4ce2dc8efee7bf5e23f32c4ba14dd89a6b32aabcd7c6beae3486b86308fa58f1c60ee

Download Submit
memory/3508-12-0x00007FFB5DC70000-0x00007FFB5DC80000-memory.dmp

Filesize
64KB

Download
memory/3508-5-0x00007FFB605D0000-0x00007FFB605E0000-memory.dmp

Filesize
64KB

Download
memory/3508-7-0x00007FFBA0550000-0x00007FFBA0745000-memory.dmp

Filesize
2.0MB

Download
memory/3508-2-0x00007FFB605D0000-0x00007FFB605E0000-memory.dmp

Filesize
64KB

Download
memory/3508-0-0x00007FFB605D0000-0x00007FFB605E0000-memory.dmp

Filesize
64KB

Download
memory/3508-9-0x00007FFBA0550000-0x00007FFBA0745000-memory.dmp

Filesize
2.0MB

Download
memory/3508-10-0x00007FFBA0550000-0x00007FFBA0745000-memory.dmp

Filesize
2.0MB

Download
memory/3508-8-0x00007FFBA0550000-0x00007FFBA0745000-memory.dmp

Filesize
2.0MB

Download
memory/3508-3-0x00007FFBA05ED000-0x00007FFBA05EE000-memory.dmp

Filesize
4KB

Download
memory/3508-4-0x00007FFB605D0000-0x00007FFB605E0000-memory.dmp

Filesize
64KB

Download
memory/3508-13-0x00007FFBA0550000-0x00007FFBA0745000-memory.dmp

Filesize
2.0MB

Download
memory/3508-14-0x00007FFBA0550000-0x00007FFBA0745000-memory.dmp

Filesize
2.0MB

Download
memory/3508-15-0x00007FFB5DC70000-0x00007FFB5DC80000-memory.dmp

Filesize
64KB

Download
memory/3508-11-0x00007FFBA0550000-0x00007FFBA0745000-memory.dmp

Filesize
2.0MB

Download
memory/3508-6-0x00007FFBA0550000-0x00007FFBA0745000-memory.dmp

Filesize
2.0MB

Download
memory/3508-41-0x00007FFBA0550000-0x00007FFBA0745000-memory.dmp

Filesize
2.0MB

Download
memory/3508-43-0x00007FFBA0550000-0x00007FFBA0745000-memory.dmp

Filesize
2.0MB

Download
memory/3508-42-0x00007FFBA0550000-0x00007FFBA0745000-memory.dmp

Filesize
2.0MB

Download
memory/3508-1-0x00007FFB605D0000-0x00007FFB605E0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads